108289661 has 2 divisors, whose sum is σ = 108289662. Its totient is φ = 108289660.

The previous prime is 108289637. The next prime is 108289673. The reversal of 108289661 is 166982801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107952100 + 337561 = 10390^2 + 581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108289661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108289061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54144830 + 54144831.

It is an arithmetic number, because the mean of its divisors is an integer number (54144831).

Almost surely, 2^108289661 is an apocalyptic number.

It is an amenable number.

108289661 is a deficient number, since it is larger than the sum of its proper divisors (1).

108289661 is an equidigital number, since it uses as much as digits as its factorization.

108289661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 108289661 is about 10406.2318348190. The cubic root of 108289661 is about 476.6456838422.

The spelling of 108289661 in words is "one hundred eight million, two hundred eighty-nine thousand, six hundred sixty-one".